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Grade: 12th pass
        
Two blocks a and b of mass 10 kg and 20 kg respectively are placed as shown in figure. Coefficient of friction between all the surfaces is 0.2 (g=10m/s2), then :
A. Tension in the string is 306 N
B. Tension in the string is 132 N
C. Acceleration of the block B is 2.6 m/s2
D. Acceleration of the block B is 4.7 m/s2
28 days ago

Answers : (1)

Vikas TU
8447 Points
							
 
Since block M1 is attached to the string so it will remain stationary M2 has tendency to move downwards.so friction on m2 will act in upward direction.
N is the force by which the both block are pressed such that  N=Tcos30
For block m1
M1g+mu(Tcos30)-Tsin30=M1
For block m2
M2g-(muN+muN)=m2a
On solving t is equal to 250 Newton and a is equal to 3 M per second square
28 days ago
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Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


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